modelGuideline36

Variable air volume flow system with single themal zone and ASHRAE Guideline 36 sequence control
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Extends from Modelica.Icons.Example (Icon for runnable examples), Buildings.Air.Systems.SingleZone.VAV.Examples.BaseClasses.PartialOpenLoop (Partial model of a single zone variable air volume flow system and thermal zone).

Information

Implementation of Buildings.Air.Systems.SingleZone.VAV.Examples.BaseClasses.PartialOpenLoop with ASHRAE Guideline 36 control sequence.

Parameters

TypeNameDefaultDescription
Modelica.Units.SI.TemperatureTSupChi_nominal (from PartialOpenLoop)279.15Design value for chiller leaving water temperature

Connectors

TypeNameDefaultDescription
BoundaryConditions.WeatherData.BusweaBus (from PartialOpenLoop)Weather bus

Components

TypeNameDefaultDescription
Buildings.Air.Systems.SingleZone.VAV.ChillerDXHeatingEconomizerhvac (from PartialOpenLoop)Single zone VAV system
Buildings.Air.Systems.SingleZone.VAV.Examples.BaseClasses.Roomzon (from PartialOpenLoop)Thermal envelope of single zone
Buildings.BoundaryConditions.WeatherData.ReaderTMY3weaDat (from PartialOpenLoop)Weather data
Modelica.Blocks.Continuous.IntegratorEFan (from PartialOpenLoop)Total fan energy
Modelica.Blocks.Continuous.IntegratorEHea (from PartialOpenLoop)Total heating energy
Modelica.Blocks.Continuous.IntegratorECoo (from PartialOpenLoop)Total cooling energy
Modelica.Blocks.Math.MultiSumEHVAC (from PartialOpenLoop)Total HVAC energy
Modelica.Blocks.Continuous.IntegratorEPum (from PartialOpenLoop)Total pump energy
Buildings.Controls.OBC.ASHRAE.G36.AHUs.SingleZone.VAV.ControllerconVAV controller
Buildings.Controls.OBC.CDL.Reals.HysteresishysChiPlaHysteresis with delay to switch on cooling
Modelica.Blocks.Math.FeedbackerrTRooCooControl error on room temperature for cooling
Buildings.Controls.SetPoints.OccupancyScheduleoccSchOccupancy schedule
Modelica.Blocks.Sources.BooleanConstantuWinWindow opening signal
Buildings.Controls.OBC.CDL.Integers.Sources.ConstantdemLimCooling and heating demand imit level
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantcooWarTimCooldown and warm-up time
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantTOccHeaSetOccupied heating setpoint
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantTOccCooSetOccupied cooling setpoint
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantTUnoHeaSetUnoccupied heating setpoint
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantTUnoCooSetUnoccupied cooling setpoint
Modelica.Blocks.Sources.BooleanConstantfreResFreeze protection reset

Revisions

  • June 24, 2022, by Jianjun Hu:
    Replaced the AHU controller with the one based official release version.
  • July 27, 2020, by Kun Zhang:
    Changed parameters of PID and design outdoor airflow and damper parameters.
    This is for issue 1608.
  • June 30, 2020, by Jianjun Hu:
    Updated AHU controller which applies the sequence of specifying operating mode according to G36 official release.
    This is for # 1893.
  • June 22, 2020, by Michael Wetter:
    Removed non-used occupant density.
  • July 29, 2019, by David Blum:
    First implementation.